Posted by Anonymous on Wednesday, November 14, 2012 at 10:45pm.
the sum of two numbers is 42. their product is 185. what are the two numbers?

math  Alexa, Wednesday, November 14, 2012 at 10:53pm
37 and 5

math  Reiny, Wednesday, November 14, 2012 at 11:05pm
x+y = 42 > y = 42x
xy = 185
x(42x) = 185
42x  x^2  185 = 0
x^2  42x + 185 = 0
x^2  42x +441 = 185+441
(x21)^2 = 256
x21 = ± √256
x = 21 ±16 = 37 or 5
if one number is 37 , the other is 5
or one is 5 , the other is 37
check:
sum = 37+5 = 42
product = 37x5 = 185

math  noah, Thursday, November 19, 2015 at 6:13pm
9b+21
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